Corpus ID: 4397610

Hierarchical Sparse Channel Estimation for Massive MIMO

  title={Hierarchical Sparse Channel Estimation for Massive MIMO},
  author={G. Wunder and I. Roth and Axel Flinth and Mahdiye Barzegar and Saeid Haghighatshoar and G. Caire and G. Kutyniok},
The problem of wideband massive MIMO channel estimation is considered. Targeting for low complexity algorithms as well as small training overhead, a compressive sensing (CS) approach is pursued. Unfortunately, due to the Kronecker-type sensing (measurement) matrix corresponding to this setup, application of standard CS algorithms and analysis methodology does not apply. By recognizing that the channel possesses a special structure, termed hierarchical sparsity, we propose an efficient algorithm… Expand
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